What's the difference?
- The ACT includes a science reasoning test; the SAT does not.
- The ACT math section includes trigonometry.
- The SAT tests vocabulary much more than the ACT.
- The SAT is not entirely multiple choice.
- The SAT has a guessing penalty; the ACT does not.
- The ACT tests English grammar; the SAT does not.
For more info go to - http://www.math.com/students/kaplan/satoract.html